Speedwerx
Speedwerx Billet Primary Clutch Cover (BCC-ADAPT-858)
Speedwerx Billet Primary Clutch Cover (BCC-ADAPT-858)
Speedwerx Billet Primary Clutch Cover (BCC-ADAPT-858)
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Speedwerx Billet Primary Clutch Cover (BCC-ADAPT-858)Speedwerx Billet Primary Clutch Cover (BCC-ADAPT-858)Speedwerx Billet Primary Clutch Cover (BCC-ADAPT-858)
Speedwerx

Speedwerx Billet Primary Clutch Cover (BCC-ADAPT-858)

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SKU: BCC-ADAPT-858

Added tower bushing material without sacrificing shift range Tighter tower ...Read more

Price:
$178.08 $189.95
1780 ENTRIES10X
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

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Product Details

Product Description
Part Numbers
Sizing & Fit
  • Added tower bushing material without sacrificing shift range
  • Tighter tower bushing tolerance
  • Additional support and webbing to tie clutch towers together and prevent flexing
  • Lighter than stock
  • ADAPT models have increased material thickness and larger corner radiuses to strengthen failure prone areas
  • Revised version for the 2025 858 models with the steel spider clutch
  • Brand: Speedwerx
  • Part number: BCC-ADAPT-858
  • Category: Drive
  • Added tower bushing material without sacrificing shift range
  • Tighter tower bushing tolerance
  • Additional support and webbing to tie clutch towers together and prevent flexing
  • Lighter than stock
  • ADAPT models have increased material thickness and larger corner radiuses to strengthen failure prone areas
  • Revised version for the 2025 858 models with the steel spider clutch
  • Brand: Speedwerx
  • Part number: BCC-ADAPT-858
  • Category: Drive

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